Add depends of webqq session
Merge pull request #1524 from linuxqq/master

depends: add webqq session
Plugins: remove compatibility for old plugins without metadata
plugins: add extension_unregister entry point
facebook: update pyfb to last version
facebook: better OAuthException detection. Format code a bit
qt4ui: resize window in single window mode. Refs #1501
SingleInstance: remove old dbus compat code
ExternalApi: Remove old dbus compat code.
xmpp: add typing notification support to facebook session
facebook: initialize options. Closes #1529
Facebook: Implement send typing notification.
xmpp: handle disconnection event and bad auth errors.
xmpp: use proper method to get vcard-updates for avatars
xmpp: remove unused imports
gui.gtkui.ContactInformation: Escape nicknames and messages before parsing them

Closes #1531
i18n: Sync the translations with launchpad
gui.common.PyNotification: Don't except upon pynotify errors

Closes #1525
papyon: The sharing and adressbook servers have been moved
Add scripts to make gtk3 windows builds. Check the wiki for info about
how to use them